I am one of those people who are blessed, or cursed, with a nature which has to interfere. If I see a thing that needs doing I do it.
From a scientific perspective there is some indication that a nuclear war could deplete the earth's ozone layer or, less likely, could bring on a new Ice Age - but there is no suggestion that either the created order or mankind would be destroyed in the process.
A lot of the television industry is so cookie-cutter. In general, there are so many shows that are easy and bland to watch. You can tune in at any time and know exactly where you are in the story arc because it's pretty much the same every week.